// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.

using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.Text;

namespace TestUtilities.Mocks
{
    internal class MockNormalizedTextChangeCollection : INormalizedTextChangeCollection
    {
        private readonly ITextChange[] _changes;

        public MockNormalizedTextChangeCollection(params ITextChange[] changes)
        {
            _changes = changes;
        }

        public bool IncludesLineChanges
        {
            get
            {
                foreach (var change in _changes)
                {
                    if (change.OldText.IndexOfAny(new[] { '\r', '\n' }) != -1 ||
                        change.NewText.IndexOfAny(new[] { '\r', '\n' }) != -1)
                    {
                        return true;
                    }
                }
                return false;
            }
        }

        public int IndexOf(ITextChange item)
        {
            for (int i = 0; i < _changes.Length; i++)
            {
                if (_changes[i] == item)
                {
                    return i;
                }
            }
            return -1;
        }

        public void Insert(int index, ITextChange item)
        {
            throw new NotImplementedException();
        }

        public void RemoveAt(int index)
        {
            throw new NotImplementedException();
        }

        public ITextChange this[int index]
        {
            get
            {
                return _changes[index];
            }
            set
            {
                throw new NotImplementedException();
            }
        }

        public void Add(ITextChange item)
        {
            throw new NotImplementedException();
        }

        public void Clear()
        {
            throw new NotImplementedException();
        }

        public bool Contains(ITextChange item)
        {
            throw new NotImplementedException();
        }

        public void CopyTo(ITextChange[] array, int arrayIndex)
        {
            throw new NotImplementedException();
        }

        public int Count
        {
            get { return _changes.Length; }
        }

        public bool IsReadOnly
        {
            get { throw new NotImplementedException(); }
        }

        public bool Remove(ITextChange item)
        {
            throw new NotImplementedException();
        }

        public IEnumerator<ITextChange> GetEnumerator()
        {
            foreach (var change in _changes)
            {
                yield return change;
            }
        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
        {
            foreach (var change in _changes)
            {
                yield return change;
            }
        }
    }
}

